Gridview 分页,OnPageIndexChanging事件(转)

Gridview 分页,OnPageIndexChanging事件

1. 默认分页方式 
(1) 是否允许分页 
GridView的AllowPaging属性。

(2) 每页记录数 
GridView的PageSize

(3) 分页导航条形式 
GridView的PagerSettings属性的Mode：Numeric，NextPrevious，NextPreviousFirstLast，NumericFirstLast。

aspx:
<asp:GridView ID="gv" AllowPaging="True" OnPageIndexChanging="gv_OnPageIndexChanging" PageSize="5" runat="server">
</asp:GridView>

cs:
protected void gv_OnPageIndexChanging(object sender, GridViewPageEventArgs e)
{
    this.gv.PageIndex = e.NewPageIndex;
    this.gvbind(); //重新绑定GridView数据的函数
}

2. 自定义分页 
(1) 当前页 总页数 首页、上一页、下一页、尾页  跳转到[ ]页
 <PagerTemplate>
-- [当前第 <asp:Label  ID="LabelCurrentPage" runat="server" 
 Text="<%# ((GridView)Container.NamingContainer).PageIndex + 1 %>"></asp:Label> 页] --

 [总 <asp:Label ID="LabelPageCount" runat="server" 
 Text="<%# ((GridView)Container.NamingContainer).PageCount %>"></asp:Label> 页] --

<asp:LinkButton ID="LinkButtonFirstPage" runat="server" CommandArgument="First" CommandName="Page" 
 Visible="<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>">首页</asp:LinkButton>

<asp:LinkButton ID="LinkButtonPreviousPage" runat="server" CommandArgument="Prev" CommandName="Page" 
 Visible="<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>">上一页</asp:LinkButton>

<asp:LinkButton ID="LinkButtonNextPage" runat="server" CommandArgument="Next" CommandName="Page" 
 Visible="<%# ((GridView)Container.NamingContainer).PageIndex != ((GridView)Container.NamingContainer).PageCount - 1 %>">下一页</asp:LinkButton>

<asp:LinkButton ID="LinkButtonLastPage" runat="server" CommandArgument="Last" CommandName="Page" 
 Visible="<%# ((GridView)Container.NamingContainer).PageIndex != ((GridView)Container.NamingContainer).PageCount - 1 %>">尾页</asp:LinkButton> 
<asp:textbox id="txtNewPageIndex" runat="server" width="20px" text='<%# ((GridView)Container.Parent.Parent).PageIndex + 1 %>' />
<asp:linkbutton id="btnGo" runat="server" causesvalidation="False" commandargument="-1" commandname="Page" text="GO" /> 
</PagerTemplate>          protected void gv_OnPageIndexChanging(object sender, GridViewPageEventArgs e)
 {
        GridView theGrid = sender as GridView;
        int newPageIndex = 0;
        if (-2 == e.NewPageIndex)
        { 
            TextBox txtNewPageIndex = null;
            GridViewRow pagerRow = theGrid.BottomPagerRow; 
            if (null != pagerRow)
            {
                txtNewPageIndex = pagerRow.FindControl("txtNewPageIndex") as TextBox;   
            }
            if (null != txtNewPageIndex)
            {
                newPageIndex = int.Parse(txtNewPageIndex.Text) - 1; // get the NewPageIndex
            }
        }
        else
        { newPageIndex = e.NewPageIndex;}
        newPageIndex = newPageIndex < 0 ? 0 : newPageIndex;
        newPageIndex = newPageIndex >= theGrid.PageCount ? theGrid.PageCount - 1 : newPageIndex;
        theGrid.PageIndex = newPageIndex;
}